Have called repeatedly, back to back, multiple days in a row

It’s a place called Bright HR

Called twice and hangs up when answered

Caller: Bright HR

Male called from this number asking for colleague, he did not advise of his name or where he was calling from. I called the number back and went to voice mail stating it is Bright HR. My boss made an enquiry with Bright HR for their free demo to see if it is suited for her business needs, and after she informed them she is not interested and to remove our number from their list, for the past few months they have been regularly calling from various mobile numbers. Harassment!

This number calls but never leaves voicemail. I wont answer numbers I don't know. They have called 2 days in a row now.